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Home > Stainless Steel > Stainless Steel 321 and 321H Instrumentation Tubing
Iris Pipes and Tubes, located in Cairo, Egypt, has built a solid reputation as a leading manufacturer and supplier of **Stainless Steel 321 and 321H Instrumentation Tubing**. They specialize in crafting precision-engineered tubing solutions that excel in high-temperature and corrosive environments. The company prides itself on its unwavering commitment to quality, cutting-edge manufacturing techniques, and strict adherence to international standards. Their **Stainless Steel 321 and 321H Instrumentation Tubing** is specifically tailored for tough conditions, offering exceptional resistance to oxidation and intergranular corrosion. With a strong focus on reliability, performance, and customer satisfaction, Iris Pipes and Tubes caters to various industries, including petrochemical, oil and gas, power generation, aerospace, and instrumentation systems, both in Egypt and around the globe.
Stainless Steel 321 and 321H Instrumentation Tubing contain mainly chromium (18-20%) and nickel (9-12%), titanium is added to harden against carbide precipitation These alloys exhibit good mechanical properties, with high strength tensile strength (up to 750 MPa) along with good quality and ductility, making them suitable for high temperature applications The advantage of 321 and 321H tubing is excellent resistance to oxidation and corrosion, especially in acidic environments. The integrity of the structures is maintained at extreme temperatures, ensuring reliability and durability in equipment use, making them ideal for the aerospace, chemical and oil industries.
| Grade | Range | Ni | Cr | P | Fe | C | Mn | N | Si | S | Ti |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 321 | Min. | 9.0 | 17.0 | 0 | 65.045 | – | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | – | 0.08 | 2.0 | 0.10 | 1.0 | 0.030 | 5(C+N) -0.70 | |
| 321H | Min. | 9.0 | 17.0 | – | 65.25 | 0.04 | – | – | – | – | – |
| Max. | 12.0 | 19.0 | 0.045 | 0.010 | 2.00 | 0.10 | 1.00 | 0.030 | 4(C+N) -0.70 |
| Grade | Tensile Strength min (MPa) | Yield Strength 0.2% Proof min (MPa) | Hardness | Elongation (% in 50mm) min | |
|---|---|---|---|---|---|
| Brinell max (HB) | Rockwell B max (HR B) | ||||
| 321/321h | 515 | 205 | 217 | 95 | 40% |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
The **Stainless Steel 321 and 321H Instrumentation Tubing** features titanium-stabilized austenitic stainless steels, containing about 17–19% chromium, 9–12% nickel, and small amounts of titanium to prevent carbide precipitation. The 321H variant has a higher carbon content, which boosts its high-temperature strength and creep resistance. Both grades boast impressive mechanical properties, such as high tensile and yield strength, good ductility, and remarkable oxidation resistance up to 900°C. Their unique chemical makeup ensures excellent weldability, formability, and structural stability in environments that involve heat, pressure, and corrosive substances.
Iris Pipes and Tubes, one of the largest suppliers of Stainless Steel 321 and 321H Instrumentation Tubing in Alexandria, Egypt, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for stainless steel products in the region.
| Grade | UNS No | Old British | Euronorm | Japanese JIS | Swedish SS | GOST | ||
|---|---|---|---|---|---|---|---|---|
| BS | En | No | Name | |||||
| 321 | S32100 | 321S31 | X6CrNiTi18-10 | 1.4541 | – | SUS 321 | 2337 | – |
| 321h | S32109 | 321S51 | X10CrNiTi18-10 | 1.4878 | – | SUS 321h | – | – |
These **Stainless Steel 321 and 321H Instrumentation Tubing** products are commonly utilized in precision control and measurement systems that face elevated temperatures and corrosive conditions. Typical applications include instrumentation lines, hydraulic systems, heat exchangers, exhaust manifolds, chemical processing units, and refinery equipment. They are particularly well-suited for industries like oil and gas, petrochemical, power generation, and aerospace, where accuracy and reliability are paramount. Their outstanding resistance to scaling, thermal fatigue, and corrosion makes them the go-to choice for high-performance applications.
Stainless Steel 321 and 321H Instrumentation Tubing are widely used in a variety of industries due to their excellent high corrosion resistance, Common applications include aerospace, medical equipment and oil and gas pipelines, . where aggressive environments are dealt with. It is used in electricity generation, automotive exhaust and heat exchangers. Tubing is ideal for applications that require precise fluid placement, equipment and pressure measurements. In addition, their stability under thermal stress makes them suitable for use in nuclear and fuel industries, making them reliable and safe.
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